122212002100 has 54 divisors (see below), whose sum is σ = 281717761010. Its totient is φ = 46009213440.

The previous prime is 122212002097. The next prime is 122212002109. The reversal of 122212002100 is 1200212221.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 56160036 + 122155842064 = 7494^2 + 349508^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212002109) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2085495 + ... + 2143294.

Almost surely, 2^122212002100 is an apocalyptic number.

122212002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122212002100 is an abundant number, since it is smaller than the sum of its proper divisors (159505758910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122212002100 is a wasteful number, since it uses less digits than its factorization.

122212002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228837 (or 4228813 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 122212002100 its reverse (1200212221), we get a palindrome (123412214321).

The spelling of 122212002100 in words is "one hundred twenty-two billion, two hundred twelve million, two thousand, one hundred".